Not working. A[row,all_dates == 10] = -1 where all_dates is a matrix with column length of 14 [[960111,..,.. and A is a matrix with same column length
I get IndexError: arrays used as indices must be of integer type when I print out all_dates == 10 I get [True True True True True True True True True False False False True True]] I experimented with "<" instead of "==" but I still get boolean values as indices. Any help? Mathew Keith Goodman wrote: > On 7/5/06, Mathew Yeates <[EMAIL PROTECTED]> wrote: >> What is the typical way of doing the following >> starting with a 0 matrix, set all values to 1 when a certain condition >> is met, set to -1 when another condition is met, left alone if neither >> condition is met. > > This works on recent versions of numpy: > >>> x = asmatrix(zeros((2,2))) > >>> x > > matrix([[0, 0], > [0, 0]]) > >>> y = asmatrix(rand(2,2)) > >>> y > > matrix([[ 0.85219404, 0.48311427], > [ 0.41026966, 0.2184193 ]]) > >>> x[y > 0.5] = 1 > >>> x[y < 0.5] = -1 > >>> x > > matrix([[ 1, -1], > [-1, -1]]) > Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Numpy-discussion mailing list Numpy-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/numpy-discussion
